To be fair, the other “undesirables” were Catholics, Irish, Chinese (or just Asians,) and women. So, it wasn’t just blacks being discriminated against, it was pretty much anyone who wasn’t a male WASP.
Source:
https://racial-justice.aflcio.org/blog/est-aliquid-se-ipsum-flagitiosum-etiamsi-nulla
Mind you, the article…